This looks like the i8042 chip is busy with something else than gettingthe touchpad data to us.

This could, for example, be getting battery/thermal data to ACPI,because it's commonly used as an ACPI EC (Embedded Controller) as wellas for handling the keyboard/mouse. I'd suggest disabling ACPIcompletely (not just ACPI=off, but CONFIG_ACPI=n), same for APM,frequency scaling, and everything else that could access the BIOS.

If that helps, then we'll need to find a way how to make sure we letACPI use the chip reasonably so that it doesn't cause these problems.